大面积堆载作用下轴向受力隔离桩的承载机制分析

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Abstract This paper aims at analyzing the passive mechanical characteristics of axially loaded isolation piles under large-scale surcharge loading. Firstly，the formulation for calculating lateral additional pressure with local surcharge is deduced based on the solution of improved Boussinesq. Then according to soil movement and stress transfer approach，the rational passive load distribution of isolation piles is obtained by improving local deformation theory of plasticity considering soil arching. Finally，differential equations of elastic and plastic regions of isolated piles are established by considering the gravity second-order effect caused by lateral load and yield of soil for tri-parameter Winkler elastic foundation beam model. Combining matrix transfer method with Laplace forward and inverse transformation，the numerical solution of passive mechanical features of isolation piles is obtained. Later，the proposed approach is verified by the test data. The results indicate that the numerical and measured results are in good agreement，and the proposed approach is applicable in engineering practice.

Key words： pile foundations surcharge load isolation piles Laplace forward and inverse transformation matrix transfer method

Received: 18 March 2013

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https://rockmech.whrsm.ac.cn/EN/Y2014/V33/I2/421

[1] DE BEER E. The effects of horizontal loads on piles，due to surcharge or seismic effects[C]// Proceedings of the Specialty Session 10. Tokyo，Japan：Japanese Association for Steel Pipe Piles，1977：1–14. [2] RANDOLPH M F，HOULSBY G T. The limiting pressure on a circular pile loaded laterally in cohesive soil[J]. Geotechnique，1984，34(4)：613–623. [3] MATLOCK H. Correlations for design of laterally loaded piles in soft clay[C]// Proceedings of the Offshore Technology Conference. Houston，Texas：ASCE，1970：77–94. [4] REESE L C，WELCH R C. Lateral loading of deep foundations in stiff clay[J]. Journal of the Geotechnical Engineering Division，1975，101(7)：633–649. [5] SULLIVAN W R，REESE L C，FENSKE C W. Unified Method for Analysis of laterally loaded piles in clay[C]// Numerical Methods in Offshore Piling. London：ICE，1980：135–146. [6] 朱碧堂. 土体的极限抗力与侧向受荷桩性状[博士学位论文][D]. 上海：同济大学，2005.(ZHU Bitang. Ultimate resistance of soil and mechanical features of laterally loaded piles[Ph. D. Thesis][D]. Shanghai：Tongji University，2005.(in Chinese)) [7] GUO W D. On limiting force profile，slip depth and response of lateral piles[J]. Computers and Geotechnics，2006，33(1)：47–67. [8] ITO T，MATSUI T. Methods to estimate lateral force acting on stabilizing piles [J]. Soils and Foundations，1975，15(4)：43–59. [9] ITO T，MATSUI T，HONG W P. Design method for the stability analysis of the slope with landing pier[J]. Soils and Foundations，1979，19(4)：43–57. [10] CTPOFAHOB A C，钟采元. 滑坡上加固结构和建筑物所受的土压力计算方法[J]. 路基工程，1998，(3)：67–74.(CTPOFAHOB A C，ZHONG Caiyuan. Methods of earth pressure calculation for reinforced structures and buildings in the landslide[J]. Subgrade Engineering，1998，(3)：67–74.(in Chinese)) [11] 沈珠江. 桩的抗滑阻力和抗滑桩的极限设计[J]. 岩土工程学报，1992，14(1)：51–56.(SHEN Zhujiang. Stabilizing force and design method for anti-slide piles[J]. Chinese Journal of Geotechnical Engineering，1992，14(1)：51–56.(in Chinese)) [12] 费纬. 隔离桩在紧邻浅基础建筑的深基坑工程变形控制中的应用[J]. 岩土工程学报，2010，32(增1)：265–270.(FEI Wei. Application of isolation piles to deformation control of deep foundation pits close to buildings with shallow foundation[J]. Chinese Journal of Geotechnical Engineering，2010，32(Supp.1)：265–270.(in Chinese)) [13] 翟杰群，贾坚，谢小林. 隔离桩在深基坑开挖保护相邻建筑中的应用[J]. 地下空间与工程学报，2010，6(1)：162–166.(ZHAI Jiequn，JIA Jian，XIE Xiaolin. Practice of partition wall in the building protection projects near deep excavation[J]. Chinese Journal of Underground Space and Engineering，2010，6(1)：162–166.(in Chinese)) [14] 吴权. 深基坑工程树根桩隔离作用实例分析[J]. 建筑技术，2007，38(3)：199–202.(WU Quan. Case analysis of isolation function of root pile in deep foundation pit[J]. Architectural Technology，2007，28(3)：199–202.(in Chinese)) [15] 姚海波，王梦恕，张顶立，等. 导洞–隔离桩体系工作机制研究与侧向变形分析[J]. 土木工程学报，2006，39(4)：105–109.(YAO Haibo，WANG Mengshu，ZHANG Dingli，et al. Mechanism of a drift-pile system and analysis of its horizontal displacement[J]. China Civil Engineering Journal，2006，39(4)：105–109.(in Chinese)) [16] 纪新博，赵文，李慎刚，等. 隔离桩在隧道侧穿邻近浅基建筑中的应用[J]. 东北大学学报：自然科学版，2013，34(1)：135–139.(JI Xinbo，ZHAO Wen，LI Shengang，et al. Application of isolation piles on metro tunnel for side-crossing the buildings with shallow foundation[J]. Journal of Northeastern University：Natural Science，2013，34(1)：135–139.(in Chinese)) [17] 刘毓氚，陈福全，左广洲. 大面积堆载下软土地基的应力隔离与加固实例分析[J]. 岩土力学，2006，27(5)：846–848.(LIU Yuchuan，CHEN Fuquan，ZUO Guangzhou. Case study of synthetic method of stress isolation and ground reinforcement to handle soft ground problem induced by adjacent surcharge load[J]. Rock and Soil Mechanics，2006，27(5)：846–848.(in Chinese)) [18] 王广月. 地下结构局部超载侧压力计算[J]. 岩土工程技术，1997，(1)：35–40.(WANG Guangyue. Lateral pressure calculation of underground structure with lateral surcharge[J]. Geotechnical Engineering Technique，1997，(1)：35–40.(in Chinese)) [19] 东南大学，浙江大学，湖南大学，等. 土力学[M]. 北京：中国建筑工业出版社，2005：101–102.(Southeast University，Zhejiang University，Hunan University，et al. Soil mechanics[J]. Beijing：China Architecture and Building Press，2005：101–102.(in Chinese)) [20] 李忠诚，杨敏. 被动桩土压力计算的被动拱–主动楔模型[J]. 岩石力学与工程学报，2006，25(2)：4 241–4 247.(LI Zhongcheng，YANG Min. Passive arching-active wedge model of soil pressure calculation in passive piles[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(2)：4 241–4 247.(in Chinese)) [21] 赵明华，邹新军，邹银生，等. 倾斜荷载下基桩的改进有限元——有限层分析方法[J]. 工程力学，2004，21(3)：129–133.(ZHAO Minghua，ZOU Xinjun，ZOU Yinsheng，et al. Behavior of piles under inclined loads by the improved finite element—finite layer method[J]. Engineering Mechanics，2004，21(3)：129–133.(in Chinese)) [22] 横山幸满. 桩结构物的计算方法和计算实例[M]. 唐业清，吴庆荪译. 北京：中国铁道出版社，1984：33–84.(YOKOYAMA Y. Calculation methods and examples of pile structures[M]. Translated by TANG Yeqing，WU Qingsun. Beijing：China Railway Publishing House，1984：33–84.(in Chinese)) [23] 赵明华. 轴向和橫向荷载同时作用下的桩基计算[J]. 湖南大学学报：自然科学版，1987，14(2)：68–81.(ZHAO Minghua. The calculation of piles under simultaneous axial and lateral loading[J]. Journal of Hunan University：Natural Science，1987，14(2)：68–81.(in Chinese)) [24] HAN J，FROST J D. Load-deflection response of transversely isotropic piles under lateral loads[J]. International Journal for Numerical and Analytical Methods in Geomechanics，2000，24(5)：509–529. [25] 张磊，龚晓南，俞建霖. 考虑土体屈服的纵横荷载单桩变形内力分析[J]. 岩土力学，2011，32(8)：2 441–2 445.(ZHANG Lei，GONG Xiaonan，YU Jianlin. Analysis of deformation and internal force for single pile under combined vertical and lateral loads considering yielding of soil[J]. Rock and Soil Mechanics，2011，32(8)：2 441– 2 445.(in Chinese)) [26] 王哲，龚晓南. 轴向与横向力同时作用下大直径灌注筒桩的受力分析[J]. 苏州科技学院学报：工程技术版，2005，18(3)：31–36. (WANG Zhe，GONG Xiaonan. The behavior of large-diameter tubular pile using cast-in-situ concrete under combined vertical and lateral loading[J]. Journal of University of Science and Technology of Suzhou：Engineering and Technology，2005，18(3)：31–36.(in Chinese))